I wonder where Braswell will fit (successor to Bay Trail). Some will be quad core. Laptop version Bay Trails have 7.5 W TDP so I wonder if they increase performance for the same TDP or drop the TDP. Graphics will be better, but it's still unknown by how much.
Those 6W core-M will likely be limited by "Configurable TDP" in some/many(?) devices, especially when they get hot or on battery (and fanless gets hot easily).